Crate fonts

Re-exports

• pub use platform::LocalFontIdentifier;
• pub use crate::platform::font_list::fallback_font_families;

Modules

• font 🔒
• font_context 🔒
• font_store 🔒
• font_template 🔒
• glyph 🔒
• platform
• shaper 🔒
• system_font_service 🔒

Macros

• ot_tag

Structs

• ByteIndex
  An index that refers to a byte offset in a text run. This could the middle of a glyph.
• CSSFontFaceDescriptors
  This data structure represents the various optional descriptors that can be applied to a @font-face rule in CSS. These are used to create a FontTemplate from the given font data used as the source of the @font-face rule. If values like weight, stretch, and style are not specified they are initialized based on the contents of the font itself.
• FallbackFontSelectionOptions
• Font
• FontBaseline
• FontContext
  The FontContext represents the per-thread/thread state necessary for working with fonts. It is the public API used by the layout and paint code. It talks directly to the system font service where required.
• FontData
  A data structure to store data for fonts. Data is stored internally in an IpcSharedMemory handle, so that it can be send without serialization across IPC channels.
• FontDescriptor
  FontDescriptor describes the parameters of a Font. It represents rendering a given font template at a particular size, with a particular font-variant-caps applied, etc. This contrasts with FontTemplateDescriptor in that the latter represents only the parameters inherent in the font data (weight, stretch, etc.).
• FontFamilyDescriptor
  The font family parameters for font selection.
• FontGroup
  A FontGroup is a prioritised list of fonts for a given set of font styles. It is used by TextRun to decide which font to render a character with. If none of the fonts listed in the styles are suitable, a fallback font may be used.
• FontMetrics
• FontStore
• FontTemplate
  This describes all the information needed to create font instance handles. It contains a unique FontTemplateData structure that is platform specific.
• FontTemplateDescriptor
  Describes how to select a font from a given family. This is very basic at the moment and needs to be expanded or refactored when we support more of the font styling parameters.
• FontTemplates
  A list of font templates that make up a given font family.
• GlyphData
• GlyphEntry
  GlyphEntry is a port of Gecko’s CompressedGlyph scheme for storing glyph data compactly.
• GlyphRun
  A single series of glyphs within a text run.
• GlyphStore
  Stores the glyph data belonging to a text run.
• LowercaseFontFamilyName
• RunMetrics
• ShapedGlyphData
• ShapedGlyphEntry
• Shaper
• ShapingFlags
• ShapingOptions
  Various options that control text shaping.
• SystemFontService
  The system font service. There is one of these for every Servo instance. This is a thread, responsible for reading the list of system fonts, handling requests to match against them, and ensuring that only one copy of system font data is loaded at a time.
• SystemFontServiceProxy
  The public interface to the SystemFontService, used by per-Document FontContext instances.
• SystemFontServiceProxySender

Enums

• ComputedFontStyleDescriptor
  A version of FontStyle from Stylo that is serializable. Normally this is not because the specified version of FontStyle contains floats.
• EmojiPresentationPreference
  Whether or not font fallback selection prefers the emoji or text representation of a character. If None then either presentation is acceptable.
• FontIdentifier
• FontSearchScope
  The scope within which we will look for a font.
• GlyphInfo
• SystemFontServiceMessage
  Commands that the FontContext sends to the SystemFontService.

Constants

• BASE
• CBDT
• COLR
• GPOS
• GSUB
• KERN
• LAST_RESORT_GLYPH_ADVANCE
• SBIX

Traits

• FontContextWebFontMethods
• FontTableMethods
• FontTemplateRefMethods
• PlatformFontMethods

Functions

• fixed_to_float 🔒
• float_to_fixed 🔒
• get_and_reset_text_shaping_performance_counter
  Get the number of nanoseconds spent shaping text across all threads.
• unicode_to_hb_script

Type Aliases

• FontRef
• FontTableTag
• FontTemplateRef
  A reference to a FontTemplate with shared ownership and mutability.
• FractionalPixel
• GlyphId
  The id of a particular glyph within a font